Pros: fantastic customer service and fast shipping. if you are thinking about an extended battery this is the one to get.

Cons: none

Overall Review: Ordered by mistake. I have the VZW Gnex. Contacted customer service and got a replacement within 2 days! The battery I have on my VZW Gnex is top notch and I am sure the GSM version is just as good.

Pros: pretty quite and moves a respectable amount of air. fan controller switch works well to turn up the speed on the fly. Probably the only 180 mm fan on the market.

Cons: thick. could not mount on side panel of my case as I desired because it brushed up against my cpu cooler.

Overall Review: if you need a 180 mm fan you don't have much choice but this fits the bill nicely.

Pros: cheap.

Cons: you get what you pay for. barely moves air and louder then necessary

Overall Review: bought this to replace the poopy fans that came with my fractal designs midi case, turns out they are the exact same fans without wire sleeving. DOH!

Pros: On a good day can easily double the battery life of the 2000 mAh Sammy Battery. I have gone as much as 40 hours 5 hours screen time streaming music over 4g for 5~7 hours! when my wife got a GNex too I immediately ordered one for her as well. The price at "that jungle/river named website" went up to $35 for some reason but it is $5 dollars cheaper on the egg then what I paid for mine! Fantastic customer service.

Cons: definitely need to get a Hyperion tpu case for it to look right. Thankfully the cases are high quality and really nice looking. the bulge is hardly noticeable but not quite a great grip, more the phones design then the battery cover but it is easily overlooked

Overall Review: Read the instructions, 3 or 4 full cycles when you first get it and repeat once monthly. Don't know why it makes a difference but it absolutely does.